From: James E Wilson <wilson@tuliptree.org>
Date: Sun, 16 Mar 2008 15:48:09 +0000 (+0000)
Subject: re PR debug/31510 (FAIL: libgomp.fortran/threadprivate[23].f90  -O3 -g)
X-Git-Tag: releases/gcc-4.4.0~6006
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=fcb9237b9cc863b563f4b82e04611c98a77dbb67;p=thirdparty%2Fgcc.git

re PR debug/31510 (FAIL: libgomp.fortran/threadprivate[23].f90  -O3 -g)

	PR debug/31510
	* dbxout.c (dbxout_expand_expr, case VAR_DECL): Return NULL for
	emulated thread local variables.

From-SVN: r133274
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 58d47850c186..fa2ed097f625 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2008-03-16  James E. Wilson  <wilson@tuliptree.org>
+
+	PR debug/31510
+	* dbxout.c (dbxout_expand_expr, case VAR_DECL): Return NULL for
+	emulated thread local variables.
+
 2008-03-16  Richard Guenther  <rguenther@suse.de>
 
 	PR middle-end/35607
diff --git a/gcc/dbxout.c b/gcc/dbxout.c
index ad1b3c76eddf..8b11a9a371d0 100644
--- a/gcc/dbxout.c
+++ b/gcc/dbxout.c
@@ -2332,6 +2332,15 @@ dbxout_expand_expr (tree expr)
   switch (TREE_CODE (expr))
     {
     case VAR_DECL:
+      /* We can't handle emulated tls variables, because the address is an
+	 offset to the return value of __emutls_get_address, and there is no
+	 way to express that in stabs.  Also, there are name mangling issues
+	 here.  We end up with references to undefined symbols if we don't
+	 disable debug info for these variables.  */
+      if (!targetm.have_tls && DECL_THREAD_LOCAL_P (expr))
+	return NULL;
+      /* FALLTHRU */
+
     case PARM_DECL:
       if (DECL_HAS_VALUE_EXPR_P (expr))
 	return dbxout_expand_expr (DECL_VALUE_EXPR (expr));